Overview
GitLab Community and Enterprise Editions contain a server-side request forgery vulnerability which could allow unauthorized external users to perform Server Side Requests via the CI Lint API.
https://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-released/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-39935
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2021-39935 |
| Vendor / Product | GitLab — Community and Enterprise Editions |
| NVD Published | 2021-12-13 |
| NVD Last Modified | 2026-02-04 |
| CVSS 3.1 Score | 6.8 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N |
| Severity | MEDIUM |
| CWE | CWE-918 |
| CISA KEV Added | 2026-02-03 |
| CISA KEV Deadline | 2026-02-24 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2026-02-24.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2026-02-03 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2026-02-24 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2021-39935 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |